President's Address ------- p.184Kiyosaku Kisida
5th General Meeting of the Association ------- p.186
New Glass Research TopicsAnalyses of Local Structure of Rare Earth Ions in Glasses by Phonon Sideband Spectra ------- p.189
Setsuhisa Tanabe
Shin-ichi Todoroki
New Porous Glass-Ceramics with a Skeleton of 2-dimensional Layered Crystal Ti (HPO4)2ˇ¦2H2O or NASICON-type Crystal LiTi2(PO4)3 ------- p.196
Hideo Hosono
Yoshihiro Abe
Stress Corrosion of Glass ------- p.202
Shin-ichi Takeda
Inside Topics in Development ofThe Hidden Tale of Neoparies Development ------- p.207
Susumu Kawamura
Proceedings of the NGF Seminars23rd Seminar on Glasses for Optical UsePlanar Lightwave Circuit ------- p.213
Motohiro Nakahara
Proceedings of the NGF Seminars27th Seminar on Light Effective Application and New GlassThermochromizm and New Glass ------- p.221
Shin-ichi Ogawa
Mechanism of Radiation Energy Control by Films Coated on Sheet Glass ------- p.227
Hiroshi Nakashima
Rare-earth Doped Upconversion Glass Lasers ------- p.233
Kazuyuki Hirao
News Digest ------- p.243
Overseas TopicsAmerican Ceramic Society 1992 Annual Meeting ------- p.245
Itaru Yasui
Domestic TopicsReport of 39th Meeting on Applied Physics ------- p.249
Hiroyuki lnoue
Questionnaire about Standardization of Glass Substrates for LCD ------- p.251
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